Welcome Steve and thanks for joining the conversation.
I have some boosters apart and the insides look just like the pictures that Steve G. posted.
The exteriors would have looked the same as the interior new, but oxidize over time.
Knock out the sniping at each other. It may happen on other forums, but it is not acceptable here.
I would like to express one point to Steve Gregori regarding this whole thread and what has been written.
Steve, I have NEVER tried to sell our work over yours or promote that we are the only shop that does boosters……..or that we do better work! I want to make that clear! On the contrary, I have referred many people to you when it comes to someone who needs a booster buffed to remove pits and restored. I have always spoken highly of your work. So please, don’t insult me here.
In this thread I stated that I did a lot of research on the plating back in the 1980’s. Cadmium work that we did at the Applied Physics Lab looked VERY similar to what the inside of the boosters that you posted here. What I am stating is that it is my professional opinion through the research I’ve done that boosters were cadmium plated, not zinc. And that the same shiny rainbow patina with good quality cad plating will look very much the same as the bright yellow zinc. We have restored thousands too and I know what the plating inside the booster looks like.
To say that the PHD’s, engineers and lab people I worked with “missed something” in their plating analysis is in very bad taste……..they are a hell of a lot smarter that you and I put together. Larry Christensen who is also a certified Diamond master judge and well known restorer in the hobby has stated that brake boosters were cadmium plated and not zinc. This is his research too.
The booster on my survivor Z28 is original. When the second owner bought the car in 1990, he had sent it down to me. I told him that it should not be restored because it was a very original booster. It was not restored and installed back on the car. Even if it is not to your liking, it’s on the car and will stay on the car as is.
Mr. Shauger and I don’t see eye to eye in the hobby. And when ever there is an issue that comes up and he’s involved along with myself, there is a mission to make me and my business look bad.
All that said, I want to wish all on this forum, and Steve Gregori, a very Merry Christmas and a happy new year.